Low-energy electron impact coherence parameters for the 1S0-1P1 excitation in barium

被引:11
作者
Johnson, PV [1 ]
Spanu, C [1 ]
Li, Y [1 ]
Zetner, PW [1 ]
机构
[1] Univ Manitoba, Dept Phys & Astron, Winnipeg, MB R3T 2N2, Canada
关键词
D O I
10.1088/0953-4075/33/23/309
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
Superelastic electron scattering involving the collisional de-excitation of laser-excited Ba-138(... 6s6p P-1(1))atoms to the (...6s(2) S-1(0))ground state has been used to measure electron impact coherence parameters for the related (...6s(2) S-1(0))-(...6s6p P-1(1)) inelastic process. Measurements of the natural parameters: gamma and P-lin(+) were made for excitation at impact energies of 5, 7.5, 9, 10 and 15 eV. Experimental data are compared with available theoretical results.
引用
收藏
页码:5367 / 5386
页数:20
相关论文
共 28 条
[1]   COLLISIONAL ALIGNMENT AND ORIENTATION OF ATOMIC OUTER SHELLS .1. DIRECT EXCITATION BY ELECTRON AND ATOM IMPACT [J].
ANDERSEN, N ;
GALLAGHER, JW ;
HERTEL, IV .
PHYSICS REPORTS-REVIEW SECTION OF PHYSICS LETTERS, 1988, 165 (1-2) :1-188
[2]  
BEYER HJ, 1994, Z PHYS D, V30
[3]   ELECTRON-PHOTON COINCIDENCE STUDIES IN MAGNESIUM [J].
BRUNGER, MJ ;
RILEY, JL ;
SCHOLTEN, RE ;
TEUBNER, PJO .
JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS, 1989, 22 (09) :1431-1442
[4]   EXCITATION OF BA AND BA+ RESONANCE LINES BY ELECTRON-IMPACT ON BA ATOMS [J].
CHEN, ST ;
GALLAGHER, A .
PHYSICAL REVIEW A, 1976, 14 (02) :593-601
[5]   THEORETICAL-STUDIES ON THE ELECTRON-IMPACT EXCITATION OF NEUTRAL MAGNESIUM [J].
CLARK, REH ;
CSANAK, G ;
ABDALLAH, J .
PHYSICAL REVIEW A, 1991, 44 (05) :2874-2882
[6]   Electron impact excitation cross sections for beryllium and boron [J].
Clark, REH ;
Abdallah, J .
PHYSICA SCRIPTA, 1996, T62 :7-18
[7]   ELECTRON-IMPACT CROSS-SECTIONS AND COHERENCE PARAMETERS FOR THE 6S2 S-1-6S 6P P-1 TRANSITION IN NEUTRAL BARIUM [J].
CLARK, REH ;
ABDALLAH, J ;
CSANAK, G ;
KRAMER, SP .
PHYSICAL REVIEW A, 1989, 40 (06) :2935-2949
[8]  
CSANAK G, 1999, COMMUNICATION
[9]   ABSOLUTE ELASTIC AND INELASTIC ELECTRON-SCATTERING CROSS-SECTIONS FOR XENON IN THE 15-100-EV IMPACT-ENERGY REGION [J].
ESTER, T ;
KESSLER, J .
JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS, 1994, 27 (18) :4295-4308
[10]   Calculation of electron scattering from the ground state of barium [J].
Fursa, DV ;
Bray, I .
PHYSICAL REVIEW A, 1999, 59 (01) :282-294